what you do now: uglify source.js > dest.tmp.js echo "/* Copyright blah blah" > copyright.js cat copyright.js dest.tmp.js > dest.js rm copyrigh

what you do now: uglify source.js > dest.tmp.js echo "/* Copyright blah blah" > copyright.js cat copyright.js dest.tmp.js > dest.js rm copyright.js dest.tmp.js what you should do: echo "/* Copyright blah blah" > dest.js uglify source.js >> dest.js